Systray does not show the remmina applet icon in Plasma 5.7 - therefore no connect menu

Please give us some details about the systems you are using:

Client (OS name and version): Gnu/Linux 4.6.4-301.fc24.x86_64
Remmina version (remmina --version): 1.2.0 (remmina-1.2.0-0.13.rcgit.7.fc24.src.rpm)
Desktop environment (GNOME, Unity, KDE, ..): 4.14.10-13 (KDE) Plasma (5.7.3-1)
Connecting to (OS and version): Windows 7
Connecting via (RDP, VNC, ...): VNC
RDP issues only, freerdp version (xfreerdp --version):

I am unable to right click on the remmina icon because it does not appear in the systray.

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